feat: 初始版本，圆角主题与首次管理员引导

app/templates/feed/following.html

@@ -0,0 +1,20 @@
+{% extends 'base.html' %}
+{% block title %}关注{% endblock %}
+{% block content %}
+<h3 class="mb-3">关注</h3>
+<div class="card-grid">
+  {% for p in posts %}
+  <div class="card">
+    {% set first = p.images[0] if p.images %}
+    {% if first %}
+    <a href="{{ url_for('posts.detail', post_id=p.id) }}">
+      <img class="photo-thumb" src="{{ url_for('main.uploads', filename=first.web_path.split('uploads\\')[-1]) }}" alt="{{ p.title }}" />
+    </a>
+    {% endif %}
+    <div class="p-3">
+      <a class="text-decoration-none" href="{{ url_for('posts.detail', post_id=p.id) }}">{{ p.title }}</a>
+    </div>
+  </div>
+  {% endfor %}
+</div>
+{% endblock %}